Coherent interaction of atoms with a beam of light confined in a light cage

Davidson-Marquis F, Gargiulo J, Gomez-Lopez E, Jang B, Kroh T, Mueller C, Ziegler M, Maier SA, Kuebler H, Schmidt MA, Benson O (2021)

Publication Type: Journal article

Publication year: 2021


Book Volume: 10

Article Number: 114

Journal Issue: 1

DOI: 10.1038/s41377-021-00556-z


Controlling coherent interaction between optical fields and quantum systems in scalable, integrated platforms is essential for quantum technologies. Miniaturised, warm alkali-vapour cells integrated with on-chip photonic devices represent an attractive system, in particular for delay or storage of a single-photon quantum state. Hollow-core fibres or planar waveguides are widely used to confine light over long distances enhancing light-matter interaction in atomic-vapour cells. However, they suffer from inefficient filling times, enhanced dephasing for atoms near the surfaces, and limited light-matter overlap. We report here on the observation of modified electromagnetically induced transparency for a non-diffractive beam of light in an on-chip, laterally-accessible hollow-core light cage. Atomic layer deposition of an alumina nanofilm onto the light-cage structure was utilised to precisely tune the high-transmission spectral region of the light-cage mode to the operation wavelength of the atomic transition, while additionally protecting the polymer against the corrosive alkali vapour. The experiments show strong, coherent light-matter coupling over lengths substantially exceeding the Rayleigh range. Additionally, the stable non-degrading performance and extreme versatility of the light cage provide an excellent basis for a manifold of quantum-storage and quantum-nonlinear applications, highlighting it as a compelling candidate for all-on-chip, integrable, low-cost, vapour-based photon delay.

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How to cite


Davidson-Marquis, F., Gargiulo, J., Gomez-Lopez, E., Jang, B., Kroh, T., Mueller, C.,... Benson, O. (2021). Coherent interaction of atoms with a beam of light confined in a light cage. Light: Science & Applications, 10(1).


Davidson-Marquis, Flavie, et al. "Coherent interaction of atoms with a beam of light confined in a light cage." Light: Science & Applications 10.1 (2021).

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